1213120022 has 4 divisors (see below), whose sum is σ = 1819680036. Its totient is φ = 606560010.

The previous prime is 1213119991. The next prime is 1213120039. The reversal of 1213120022 is 2200213121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1213119979 and 1213120006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303280004 + ... + 303280007.

It is an arithmetic number, because the mean of its divisors is an integer number (454920009).

Almost surely, 2^1213120022 is an apocalyptic number.

1213120022 is a deficient number, since it is larger than the sum of its proper divisors (606560014).

1213120022 is an equidigital number, since it uses as much as digits as its factorization.

1213120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606560013.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1213120022 is about 34829.8725521642. The cubic root of 1213120022 is about 1066.5173466545.

Adding to 1213120022 its reverse (2200213121), we get a palindrome (3413333143).

The spelling of 1213120022 in words is "one billion, two hundred thirteen million, one hundred twenty thousand, twenty-two".